| 年度 | 实际值 |
|---|---|
| 1985 | 2677 |
| 1986 | 3499 |
| 1987 | 3073 |
| 1988 | 3623 |
| 1989 | 5709 |
| 1990 | 7034 |
| 1991 | 8827 |
| 1992 | 7752 |
| 1993 | 10989 |
| 1994 | 11842 |
| 1995 | 12374 |
| 1996 | 14888 |
| 1997 | 17270 |
| 1998 | 19712 |
| 1999 | 22130 |
| 2000 | 29644 |
| 2001 | 41811 |
| 2002 | 53317 |
| 2003 | 64925 |
| 2004 | 68447 |
| 2005 | 83813 |
| 2006 | 86424 |
| 2007 | 108217 |
| 2008 | 132721 |
| 2009 | 174918 |
| 2010 | 225214 |
| 2011 | 248307 |
| 2012 | 269466 |
| 2013 | 288226 |
| 2014 | 302126 |
| 2015 | 331887 |